Table 1.

Maturation of intrinsic membrane properties and spontaneous input: development

Cell type	Parameter	Rank correlation with postnatal day or dpi			Group means ± SEM (n)
Cell type	Parameter	r	p	n	Pw1	Pw4	Adult
ETC	R_m	−0.21	0.11	60	714 ± 78 MΩ (26)	562 ± 53 MΩ (11)
	C_m	−0.20	0.12	59	29.1 ± 1.7 pF (26)	21.8 ± 2.0 pF (10)*
	Peak Na⁺ current	0.33	0.01	59	96 ± 12 pA/pF (26)	206 ± 38 pA/pF (10)*
	sEPSC frequency	0.20	0.14	57	0.81 ± 0.21 Hz (23)	2.03 ± 0.80 Hz (11)
	sEPSC amplitude	−0.32	0.02	53	17.4 ± 1.5 pA (22)	12.8 ± 0.9 pA (10)*
	sIPSC frequency	0.57	<0.0001	52	0.08 ± 0.04 Hz (19)	0.86 ± 0.34 Hz (11)**
	sIPSC amplitude	0.38	0.03	33	10.0 ± 1.0 pA (6)	13.6 ± 1.6 pA (9)
PGC	R_m	−0.27	<0.0001	254	2526 ± 108 MΩ (106)	2006 ± 107 MΩ (72)**	1927 ± 169 MΩ (41), ns**
	C_m	−0.04	0.50	223	12.3 ± 0.4 pF (94)	12.0 ± 0.6 pF (66)	11.0 ± 10.6 pF (36)
	Peak Na⁺ current	0.44	<0.0001	218	85 ± 10 pA/pF (91)	157 ± 14 pA/pF (64)***	188 ± 21 pA/pF (36), ns*
	sEPSC frequency	0.30	<0.0001	220	0.14 ± 0.03 Hz (89)	1.40 ± 0.32 Hz (59)***	1.11 ± 0.37 Hz (38) ns, *
	sEPSC amplitude	−0.35	<0.0001	163	24.5 ± 2.0 pA (58)	17.8 ± 1.0 pA (51) ns	13.8 ± 1.0 pA (26)**,
	sIPSC frequency	0.51	<0.0001	136	0.03 ± 0.02 Hz (40)	0.36 ± 0.12 Hz (34)***	0.87 ± 0.34 Hz (30), ns*
	sIPSC amplitude	0.20	0.08	81	18.6 ± 5.1 pA (9)	14.4 ± 1.3 pA (26)	18.4 ± 2.3 pA (26)

Values in bold come from significant correlations or group comparisons (p < 0.05). For two-sample group comparisons (t test or Mann–Whitney test, depending on sample normality), the significance level is displayed at the end of the Pw4 column. For three-sample group comparisons, bold values indicate a significant overall difference between groups in a parametric or nonparametric ANOVA (depending on sample normality). The results of post hoc comparisons between groups are then shown at the end of the Pw4 and Adult columns. The Pw4 column contains the result of a comparison between the Pw1 and Pw4 columns, whereas the Adult column shows the results of comparisons between the Pw1 and Adult columns and between the Pw4 and Adult columns, in that order. *p < 0.05; **p < 0.01; ***p < 0.001; ns, nonsignificant.